Comparison : Item # 522591, Blast hose section, 5/8" ID
Item # 522601, Blast hose section, 5/8" ID, Ergo-Blast
Item # 522851, Air-hose assembly, 1/2" ID*use 8ft of 520861*
Item # 516261, Air-hose assembly, 1/2" ID, Ergo-Blast